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1c301fc5 JC |
1 | /* |
2 | * adt7475 - Thermal sensor driver for the ADT7475 chip and derivatives | |
3 | * Copyright (C) 2007-2008, Advanced Micro Devices, Inc. | |
4 | * Copyright (C) 2008 Jordan Crouse <jordan@cosmicpenguin.net> | |
5 | * Copyright (C) 2008 Hans de Goede <hdegoede@redhat.com> | |
6 | ||
7 | * Derived from the lm83 driver by Jean Delvare | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License version 2 as | |
11 | * published by the Free Software Foundation. | |
12 | */ | |
13 | ||
14 | #include <linux/module.h> | |
15 | #include <linux/init.h> | |
16 | #include <linux/slab.h> | |
17 | #include <linux/i2c.h> | |
18 | #include <linux/hwmon.h> | |
19 | #include <linux/hwmon-sysfs.h> | |
20 | #include <linux/err.h> | |
21 | ||
22 | /* Indexes for the sysfs hooks */ | |
23 | ||
24 | #define INPUT 0 | |
25 | #define MIN 1 | |
26 | #define MAX 2 | |
27 | #define CONTROL 3 | |
28 | #define OFFSET 3 | |
29 | #define AUTOMIN 4 | |
30 | #define THERM 5 | |
31 | #define HYSTERSIS 6 | |
32 | ||
33 | /* These are unique identifiers for the sysfs functions - unlike the | |
34 | numbers above, these are not also indexes into an array | |
35 | */ | |
36 | ||
37 | #define ALARM 9 | |
38 | #define FAULT 10 | |
39 | ||
40 | /* 7475 Common Registers */ | |
41 | ||
42 | #define REG_VOLTAGE_BASE 0x21 | |
43 | #define REG_TEMP_BASE 0x25 | |
44 | #define REG_TACH_BASE 0x28 | |
45 | #define REG_PWM_BASE 0x30 | |
46 | #define REG_PWM_MAX_BASE 0x38 | |
47 | ||
48 | #define REG_DEVID 0x3D | |
49 | #define REG_VENDID 0x3E | |
50 | ||
51 | #define REG_STATUS1 0x41 | |
52 | #define REG_STATUS2 0x42 | |
53 | ||
54 | #define REG_VOLTAGE_MIN_BASE 0x46 | |
55 | #define REG_VOLTAGE_MAX_BASE 0x47 | |
56 | ||
57 | #define REG_TEMP_MIN_BASE 0x4E | |
58 | #define REG_TEMP_MAX_BASE 0x4F | |
59 | ||
60 | #define REG_TACH_MIN_BASE 0x54 | |
61 | ||
62 | #define REG_PWM_CONFIG_BASE 0x5C | |
63 | ||
64 | #define REG_TEMP_TRANGE_BASE 0x5F | |
65 | ||
66 | #define REG_PWM_MIN_BASE 0x64 | |
67 | ||
68 | #define REG_TEMP_TMIN_BASE 0x67 | |
69 | #define REG_TEMP_THERM_BASE 0x6A | |
70 | ||
71 | #define REG_REMOTE1_HYSTERSIS 0x6D | |
72 | #define REG_REMOTE2_HYSTERSIS 0x6E | |
73 | ||
74 | #define REG_TEMP_OFFSET_BASE 0x70 | |
75 | ||
76 | #define REG_EXTEND1 0x76 | |
77 | #define REG_EXTEND2 0x77 | |
78 | #define REG_CONFIG5 0x7C | |
79 | ||
80 | #define CONFIG5_TWOSCOMP 0x01 | |
81 | #define CONFIG5_TEMPOFFSET 0x02 | |
82 | ||
83 | /* ADT7475 Settings */ | |
84 | ||
85 | #define ADT7475_VOLTAGE_COUNT 2 | |
86 | #define ADT7475_TEMP_COUNT 3 | |
87 | #define ADT7475_TACH_COUNT 4 | |
88 | #define ADT7475_PWM_COUNT 3 | |
89 | ||
90 | /* Macro to read the registers */ | |
91 | ||
92 | #define adt7475_read(reg) i2c_smbus_read_byte_data(client, (reg)) | |
93 | ||
94 | /* Macros to easily index the registers */ | |
95 | ||
96 | #define TACH_REG(idx) (REG_TACH_BASE + ((idx) * 2)) | |
97 | #define TACH_MIN_REG(idx) (REG_TACH_MIN_BASE + ((idx) * 2)) | |
98 | ||
99 | #define PWM_REG(idx) (REG_PWM_BASE + (idx)) | |
100 | #define PWM_MAX_REG(idx) (REG_PWM_MAX_BASE + (idx)) | |
101 | #define PWM_MIN_REG(idx) (REG_PWM_MIN_BASE + (idx)) | |
102 | #define PWM_CONFIG_REG(idx) (REG_PWM_CONFIG_BASE + (idx)) | |
103 | ||
104 | #define VOLTAGE_REG(idx) (REG_VOLTAGE_BASE + (idx)) | |
105 | #define VOLTAGE_MIN_REG(idx) (REG_VOLTAGE_MIN_BASE + ((idx) * 2)) | |
106 | #define VOLTAGE_MAX_REG(idx) (REG_VOLTAGE_MAX_BASE + ((idx) * 2)) | |
107 | ||
108 | #define TEMP_REG(idx) (REG_TEMP_BASE + (idx)) | |
109 | #define TEMP_MIN_REG(idx) (REG_TEMP_MIN_BASE + ((idx) * 2)) | |
110 | #define TEMP_MAX_REG(idx) (REG_TEMP_MAX_BASE + ((idx) * 2)) | |
111 | #define TEMP_TMIN_REG(idx) (REG_TEMP_TMIN_BASE + (idx)) | |
112 | #define TEMP_THERM_REG(idx) (REG_TEMP_THERM_BASE + (idx)) | |
113 | #define TEMP_OFFSET_REG(idx) (REG_TEMP_OFFSET_BASE + (idx)) | |
114 | #define TEMP_TRANGE_REG(idx) (REG_TEMP_TRANGE_BASE + (idx)) | |
115 | ||
116 | static unsigned short normal_i2c[] = { 0x2e, I2C_CLIENT_END }; | |
117 | ||
118 | I2C_CLIENT_INSMOD_1(adt7475); | |
119 | ||
120 | static const struct i2c_device_id adt7475_id[] = { | |
121 | { "adt7475", adt7475 }, | |
122 | { } | |
123 | }; | |
124 | MODULE_DEVICE_TABLE(i2c, adt7475_id); | |
125 | ||
126 | struct adt7475_data { | |
127 | struct device *hwmon_dev; | |
128 | struct mutex lock; | |
129 | ||
130 | unsigned long measure_updated; | |
131 | unsigned long limits_updated; | |
132 | char valid; | |
133 | ||
134 | u8 config5; | |
135 | u16 alarms; | |
136 | u16 voltage[3][3]; | |
137 | u16 temp[7][3]; | |
138 | u16 tach[2][4]; | |
139 | u8 pwm[4][3]; | |
140 | u8 range[3]; | |
141 | u8 pwmctl[3]; | |
142 | u8 pwmchan[3]; | |
143 | }; | |
144 | ||
145 | static struct i2c_driver adt7475_driver; | |
146 | static struct adt7475_data *adt7475_update_device(struct device *dev); | |
147 | static void adt7475_read_hystersis(struct i2c_client *client); | |
148 | static void adt7475_read_pwm(struct i2c_client *client, int index); | |
149 | ||
150 | /* Given a temp value, convert it to register value */ | |
151 | ||
152 | static inline u16 temp2reg(struct adt7475_data *data, long val) | |
153 | { | |
154 | u16 ret; | |
155 | ||
156 | if (!(data->config5 & CONFIG5_TWOSCOMP)) { | |
157 | val = SENSORS_LIMIT(val, -64000, 191000); | |
158 | ret = (val + 64500) / 1000; | |
159 | } else { | |
160 | val = SENSORS_LIMIT(val, -128000, 127000); | |
161 | if (val < -500) | |
162 | ret = (256500 + val) / 1000; | |
163 | else | |
164 | ret = (val + 500) / 1000; | |
165 | } | |
166 | ||
167 | return ret << 2; | |
168 | } | |
169 | ||
170 | /* Given a register value, convert it to a real temp value */ | |
171 | ||
172 | static inline int reg2temp(struct adt7475_data *data, u16 reg) | |
173 | { | |
174 | if (data->config5 & CONFIG5_TWOSCOMP) { | |
175 | if (reg >= 512) | |
176 | return (reg - 1024) * 250; | |
177 | else | |
178 | return reg * 250; | |
179 | } else | |
180 | return (reg - 256) * 250; | |
181 | } | |
182 | ||
183 | static inline int tach2rpm(u16 tach) | |
184 | { | |
185 | if (tach == 0 || tach == 0xFFFF) | |
186 | return 0; | |
187 | ||
188 | return (90000 * 60) / tach; | |
189 | } | |
190 | ||
191 | static inline u16 rpm2tach(unsigned long rpm) | |
192 | { | |
193 | if (rpm == 0) | |
194 | return 0; | |
195 | ||
196 | return SENSORS_LIMIT((90000 * 60) / rpm, 1, 0xFFFF); | |
197 | } | |
198 | ||
199 | static inline int reg2vcc(u16 reg) | |
200 | { | |
201 | return (4296 * reg) / 1000; | |
202 | } | |
203 | ||
204 | static inline int reg2vccp(u16 reg) | |
205 | { | |
206 | return (2929 * reg) / 1000; | |
207 | } | |
208 | ||
209 | static inline u16 vcc2reg(long vcc) | |
210 | { | |
211 | vcc = SENSORS_LIMIT(vcc, 0, 4396); | |
212 | return (vcc * 1000) / 4296; | |
213 | } | |
214 | ||
215 | static inline u16 vccp2reg(long vcc) | |
216 | { | |
217 | vcc = SENSORS_LIMIT(vcc, 0, 2998); | |
218 | return (vcc * 1000) / 2929; | |
219 | } | |
220 | ||
221 | static u16 adt7475_read_word(struct i2c_client *client, int reg) | |
222 | { | |
223 | u16 val; | |
224 | ||
225 | val = i2c_smbus_read_byte_data(client, reg); | |
226 | val |= (i2c_smbus_read_byte_data(client, reg + 1) << 8); | |
227 | ||
228 | return val; | |
229 | } | |
230 | ||
231 | static void adt7475_write_word(struct i2c_client *client, int reg, u16 val) | |
232 | { | |
233 | i2c_smbus_write_byte_data(client, reg + 1, val >> 8); | |
234 | i2c_smbus_write_byte_data(client, reg, val & 0xFF); | |
235 | } | |
236 | ||
237 | /* Find the nearest value in a table - used for pwm frequency and | |
238 | auto temp range */ | |
239 | static int find_nearest(long val, const int *array, int size) | |
240 | { | |
241 | int i; | |
242 | ||
243 | if (val < array[0]) | |
244 | return 0; | |
245 | ||
246 | if (val > array[size - 1]) | |
247 | return size - 1; | |
248 | ||
249 | for (i = 0; i < size - 1; i++) { | |
250 | int a, b; | |
251 | ||
252 | if (val > array[i + 1]) | |
253 | continue; | |
254 | ||
255 | a = val - array[i]; | |
256 | b = array[i + 1] - val; | |
257 | ||
258 | return (a <= b) ? i : i + 1; | |
259 | } | |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
264 | static ssize_t show_voltage(struct device *dev, struct device_attribute *attr, | |
265 | char *buf) | |
266 | { | |
267 | struct adt7475_data *data = adt7475_update_device(dev); | |
268 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
269 | unsigned short val; | |
270 | ||
271 | switch (sattr->nr) { | |
272 | case ALARM: | |
273 | return sprintf(buf, "%d\n", | |
274 | (data->alarms >> (sattr->index + 1)) & 1); | |
275 | default: | |
276 | val = data->voltage[sattr->nr][sattr->index]; | |
277 | return sprintf(buf, "%d\n", | |
278 | sattr->index == | |
279 | 0 ? reg2vccp(val) : reg2vcc(val)); | |
280 | } | |
281 | } | |
282 | ||
283 | static ssize_t set_voltage(struct device *dev, struct device_attribute *attr, | |
284 | const char *buf, size_t count) | |
285 | { | |
286 | ||
287 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
288 | struct i2c_client *client = to_i2c_client(dev); | |
289 | struct adt7475_data *data = i2c_get_clientdata(client); | |
290 | unsigned char reg; | |
291 | long val; | |
292 | ||
293 | if (strict_strtol(buf, 10, &val)) | |
294 | return -EINVAL; | |
295 | ||
296 | mutex_lock(&data->lock); | |
297 | ||
298 | data->voltage[sattr->nr][sattr->index] = | |
299 | sattr->index ? vcc2reg(val) : vccp2reg(val); | |
300 | ||
301 | if (sattr->nr == MIN) | |
302 | reg = VOLTAGE_MIN_REG(sattr->index); | |
303 | else | |
304 | reg = VOLTAGE_MAX_REG(sattr->index); | |
305 | ||
306 | i2c_smbus_write_byte_data(client, reg, | |
307 | data->voltage[sattr->nr][sattr->index] >> 2); | |
308 | mutex_unlock(&data->lock); | |
309 | ||
310 | return count; | |
311 | } | |
312 | ||
313 | static ssize_t show_temp(struct device *dev, struct device_attribute *attr, | |
314 | char *buf) | |
315 | { | |
316 | struct adt7475_data *data = adt7475_update_device(dev); | |
317 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
318 | int out; | |
319 | ||
320 | switch (sattr->nr) { | |
321 | case HYSTERSIS: | |
322 | mutex_lock(&data->lock); | |
323 | out = data->temp[sattr->nr][sattr->index]; | |
324 | if (sattr->index != 1) | |
325 | out = (out >> 4) & 0xF; | |
326 | else | |
327 | out = (out & 0xF); | |
328 | /* Show the value as an absolute number tied to | |
329 | * THERM */ | |
330 | out = reg2temp(data, data->temp[THERM][sattr->index]) - | |
331 | out * 1000; | |
332 | mutex_unlock(&data->lock); | |
333 | break; | |
334 | ||
335 | case OFFSET: | |
336 | /* Offset is always 2's complement, regardless of the | |
337 | * setting in CONFIG5 */ | |
338 | mutex_lock(&data->lock); | |
339 | out = (s8)data->temp[sattr->nr][sattr->index]; | |
340 | if (data->config5 & CONFIG5_TEMPOFFSET) | |
341 | out *= 1000; | |
342 | else | |
343 | out *= 500; | |
344 | mutex_unlock(&data->lock); | |
345 | break; | |
346 | ||
347 | case ALARM: | |
348 | out = (data->alarms >> (sattr->index + 4)) & 1; | |
349 | break; | |
350 | ||
351 | case FAULT: | |
352 | /* Note - only for remote1 and remote2 */ | |
cf312e07 | 353 | out = !!(data->alarms & (sattr->index ? 0x8000 : 0x4000)); |
1c301fc5 JC |
354 | break; |
355 | ||
356 | default: | |
357 | /* All other temp values are in the configured format */ | |
358 | out = reg2temp(data, data->temp[sattr->nr][sattr->index]); | |
359 | } | |
360 | ||
361 | return sprintf(buf, "%d\n", out); | |
362 | } | |
363 | ||
364 | static ssize_t set_temp(struct device *dev, struct device_attribute *attr, | |
365 | const char *buf, size_t count) | |
366 | { | |
367 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
368 | struct i2c_client *client = to_i2c_client(dev); | |
369 | struct adt7475_data *data = i2c_get_clientdata(client); | |
370 | unsigned char reg = 0; | |
371 | u8 out; | |
372 | int temp; | |
373 | long val; | |
374 | ||
375 | if (strict_strtol(buf, 10, &val)) | |
376 | return -EINVAL; | |
377 | ||
378 | mutex_lock(&data->lock); | |
379 | ||
380 | /* We need the config register in all cases for temp <-> reg conv. */ | |
381 | data->config5 = adt7475_read(REG_CONFIG5); | |
382 | ||
383 | switch (sattr->nr) { | |
384 | case OFFSET: | |
385 | if (data->config5 & CONFIG5_TEMPOFFSET) { | |
386 | val = SENSORS_LIMIT(val, -63000, 127000); | |
387 | out = data->temp[OFFSET][sattr->index] = val / 1000; | |
388 | } else { | |
389 | val = SENSORS_LIMIT(val, -63000, 64000); | |
390 | out = data->temp[OFFSET][sattr->index] = val / 500; | |
391 | } | |
392 | break; | |
393 | ||
394 | case HYSTERSIS: | |
395 | /* The value will be given as an absolute value, turn it | |
396 | into an offset based on THERM */ | |
397 | ||
398 | /* Read fresh THERM and HYSTERSIS values from the chip */ | |
399 | data->temp[THERM][sattr->index] = | |
400 | adt7475_read(TEMP_THERM_REG(sattr->index)) << 2; | |
401 | adt7475_read_hystersis(client); | |
402 | ||
403 | temp = reg2temp(data, data->temp[THERM][sattr->index]); | |
404 | val = SENSORS_LIMIT(val, temp - 15000, temp); | |
405 | val = (temp - val) / 1000; | |
406 | ||
407 | if (sattr->index != 1) { | |
408 | data->temp[HYSTERSIS][sattr->index] &= 0xF0; | |
409 | data->temp[HYSTERSIS][sattr->index] |= (val & 0xF) << 4; | |
410 | } else { | |
411 | data->temp[HYSTERSIS][sattr->index] &= 0x0F; | |
412 | data->temp[HYSTERSIS][sattr->index] |= (val & 0xF); | |
413 | } | |
414 | ||
415 | out = data->temp[HYSTERSIS][sattr->index]; | |
416 | break; | |
417 | ||
418 | default: | |
419 | data->temp[sattr->nr][sattr->index] = temp2reg(data, val); | |
420 | ||
421 | /* We maintain an extra 2 digits of precision for simplicity | |
422 | * - shift those back off before writing the value */ | |
423 | out = (u8) (data->temp[sattr->nr][sattr->index] >> 2); | |
424 | } | |
425 | ||
426 | switch (sattr->nr) { | |
427 | case MIN: | |
428 | reg = TEMP_MIN_REG(sattr->index); | |
429 | break; | |
430 | case MAX: | |
431 | reg = TEMP_MAX_REG(sattr->index); | |
432 | break; | |
433 | case OFFSET: | |
434 | reg = TEMP_OFFSET_REG(sattr->index); | |
435 | break; | |
436 | case AUTOMIN: | |
437 | reg = TEMP_TMIN_REG(sattr->index); | |
438 | break; | |
439 | case THERM: | |
440 | reg = TEMP_THERM_REG(sattr->index); | |
441 | break; | |
442 | case HYSTERSIS: | |
443 | if (sattr->index != 2) | |
444 | reg = REG_REMOTE1_HYSTERSIS; | |
445 | else | |
446 | reg = REG_REMOTE2_HYSTERSIS; | |
447 | ||
448 | break; | |
449 | } | |
450 | ||
451 | i2c_smbus_write_byte_data(client, reg, out); | |
452 | ||
453 | mutex_unlock(&data->lock); | |
454 | return count; | |
455 | } | |
456 | ||
457 | /* Table of autorange values - the user will write the value in millidegrees, | |
458 | and we'll convert it */ | |
459 | static const int autorange_table[] = { | |
460 | 2000, 2500, 3330, 4000, 5000, 6670, 8000, | |
461 | 10000, 13330, 16000, 20000, 26670, 32000, 40000, | |
462 | 53330, 80000 | |
463 | }; | |
464 | ||
465 | static ssize_t show_point2(struct device *dev, struct device_attribute *attr, | |
466 | char *buf) | |
467 | { | |
468 | struct adt7475_data *data = adt7475_update_device(dev); | |
469 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
470 | int out, val; | |
471 | ||
472 | mutex_lock(&data->lock); | |
473 | out = (data->range[sattr->index] >> 4) & 0x0F; | |
474 | val = reg2temp(data, data->temp[AUTOMIN][sattr->index]); | |
475 | mutex_unlock(&data->lock); | |
476 | ||
477 | return sprintf(buf, "%d\n", val + autorange_table[out]); | |
478 | } | |
479 | ||
480 | static ssize_t set_point2(struct device *dev, struct device_attribute *attr, | |
481 | const char *buf, size_t count) | |
482 | { | |
483 | struct i2c_client *client = to_i2c_client(dev); | |
484 | struct adt7475_data *data = i2c_get_clientdata(client); | |
485 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
486 | int temp; | |
487 | long val; | |
488 | ||
489 | if (strict_strtol(buf, 10, &val)) | |
490 | return -EINVAL; | |
491 | ||
492 | mutex_lock(&data->lock); | |
493 | ||
494 | /* Get a fresh copy of the needed registers */ | |
495 | data->config5 = adt7475_read(REG_CONFIG5); | |
496 | data->temp[AUTOMIN][sattr->index] = | |
497 | adt7475_read(TEMP_TMIN_REG(sattr->index)) << 2; | |
498 | data->range[sattr->index] = | |
499 | adt7475_read(TEMP_TRANGE_REG(sattr->index)); | |
500 | ||
501 | /* The user will write an absolute value, so subtract the start point | |
502 | to figure the range */ | |
503 | temp = reg2temp(data, data->temp[AUTOMIN][sattr->index]); | |
504 | val = SENSORS_LIMIT(val, temp + autorange_table[0], | |
505 | temp + autorange_table[ARRAY_SIZE(autorange_table) - 1]); | |
506 | val -= temp; | |
507 | ||
508 | /* Find the nearest table entry to what the user wrote */ | |
509 | val = find_nearest(val, autorange_table, ARRAY_SIZE(autorange_table)); | |
510 | ||
511 | data->range[sattr->index] &= ~0xF0; | |
512 | data->range[sattr->index] |= val << 4; | |
513 | ||
514 | i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), | |
515 | data->range[sattr->index]); | |
516 | ||
517 | mutex_unlock(&data->lock); | |
518 | return count; | |
519 | } | |
520 | ||
521 | static ssize_t show_tach(struct device *dev, struct device_attribute *attr, | |
522 | char *buf) | |
523 | { | |
524 | struct adt7475_data *data = adt7475_update_device(dev); | |
525 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
526 | int out; | |
527 | ||
528 | if (sattr->nr == ALARM) | |
529 | out = (data->alarms >> (sattr->index + 10)) & 1; | |
530 | else | |
531 | out = tach2rpm(data->tach[sattr->nr][sattr->index]); | |
532 | ||
533 | return sprintf(buf, "%d\n", out); | |
534 | } | |
535 | ||
536 | static ssize_t set_tach(struct device *dev, struct device_attribute *attr, | |
537 | const char *buf, size_t count) | |
538 | { | |
539 | ||
540 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
541 | struct i2c_client *client = to_i2c_client(dev); | |
542 | struct adt7475_data *data = i2c_get_clientdata(client); | |
543 | unsigned long val; | |
544 | ||
545 | if (strict_strtoul(buf, 10, &val)) | |
546 | return -EINVAL; | |
547 | ||
548 | mutex_lock(&data->lock); | |
549 | ||
550 | data->tach[MIN][sattr->index] = rpm2tach(val); | |
551 | ||
552 | adt7475_write_word(client, TACH_MIN_REG(sattr->index), | |
553 | data->tach[MIN][sattr->index]); | |
554 | ||
555 | mutex_unlock(&data->lock); | |
556 | return count; | |
557 | } | |
558 | ||
559 | static ssize_t show_pwm(struct device *dev, struct device_attribute *attr, | |
560 | char *buf) | |
561 | { | |
562 | struct adt7475_data *data = adt7475_update_device(dev); | |
563 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
564 | ||
565 | return sprintf(buf, "%d\n", data->pwm[sattr->nr][sattr->index]); | |
566 | } | |
567 | ||
568 | static ssize_t show_pwmchan(struct device *dev, struct device_attribute *attr, | |
569 | char *buf) | |
570 | { | |
571 | struct adt7475_data *data = adt7475_update_device(dev); | |
572 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
573 | ||
574 | return sprintf(buf, "%d\n", data->pwmchan[sattr->index]); | |
575 | } | |
576 | ||
577 | static ssize_t show_pwmctrl(struct device *dev, struct device_attribute *attr, | |
578 | char *buf) | |
579 | { | |
580 | struct adt7475_data *data = adt7475_update_device(dev); | |
581 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
582 | ||
583 | return sprintf(buf, "%d\n", data->pwmctl[sattr->index]); | |
584 | } | |
585 | ||
586 | static ssize_t set_pwm(struct device *dev, struct device_attribute *attr, | |
587 | const char *buf, size_t count) | |
588 | { | |
589 | ||
590 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
591 | struct i2c_client *client = to_i2c_client(dev); | |
592 | struct adt7475_data *data = i2c_get_clientdata(client); | |
593 | unsigned char reg = 0; | |
594 | long val; | |
595 | ||
596 | if (strict_strtol(buf, 10, &val)) | |
597 | return -EINVAL; | |
598 | ||
599 | mutex_lock(&data->lock); | |
600 | ||
601 | switch (sattr->nr) { | |
602 | case INPUT: | |
603 | /* Get a fresh value for CONTROL */ | |
604 | data->pwm[CONTROL][sattr->index] = | |
605 | adt7475_read(PWM_CONFIG_REG(sattr->index)); | |
606 | ||
607 | /* If we are not in manual mode, then we shouldn't allow | |
608 | * the user to set the pwm speed */ | |
609 | if (((data->pwm[CONTROL][sattr->index] >> 5) & 7) != 7) { | |
610 | mutex_unlock(&data->lock); | |
611 | return count; | |
612 | } | |
613 | ||
614 | reg = PWM_REG(sattr->index); | |
615 | break; | |
616 | ||
617 | case MIN: | |
618 | reg = PWM_MIN_REG(sattr->index); | |
619 | break; | |
620 | ||
621 | case MAX: | |
622 | reg = PWM_MAX_REG(sattr->index); | |
623 | break; | |
624 | } | |
625 | ||
626 | data->pwm[sattr->nr][sattr->index] = SENSORS_LIMIT(val, 0, 0xFF); | |
627 | i2c_smbus_write_byte_data(client, reg, | |
628 | data->pwm[sattr->nr][sattr->index]); | |
629 | ||
630 | mutex_unlock(&data->lock); | |
631 | ||
632 | return count; | |
633 | } | |
634 | ||
635 | /* Called by set_pwmctrl and set_pwmchan */ | |
636 | ||
637 | static int hw_set_pwm(struct i2c_client *client, int index, | |
638 | unsigned int pwmctl, unsigned int pwmchan) | |
639 | { | |
640 | struct adt7475_data *data = i2c_get_clientdata(client); | |
641 | long val = 0; | |
642 | ||
643 | switch (pwmctl) { | |
644 | case 0: | |
645 | val = 0x03; /* Run at full speed */ | |
646 | break; | |
647 | case 1: | |
648 | val = 0x07; /* Manual mode */ | |
649 | break; | |
650 | case 2: | |
651 | switch (pwmchan) { | |
652 | case 1: | |
653 | /* Remote1 controls PWM */ | |
654 | val = 0x00; | |
655 | break; | |
656 | case 2: | |
657 | /* local controls PWM */ | |
658 | val = 0x01; | |
659 | break; | |
660 | case 4: | |
661 | /* remote2 controls PWM */ | |
662 | val = 0x02; | |
663 | break; | |
664 | case 6: | |
665 | /* local/remote2 control PWM */ | |
666 | val = 0x05; | |
667 | break; | |
668 | case 7: | |
669 | /* All three control PWM */ | |
670 | val = 0x06; | |
671 | break; | |
672 | default: | |
673 | return -EINVAL; | |
674 | } | |
675 | break; | |
676 | default: | |
677 | return -EINVAL; | |
678 | } | |
679 | ||
680 | data->pwmctl[index] = pwmctl; | |
681 | data->pwmchan[index] = pwmchan; | |
682 | ||
683 | data->pwm[CONTROL][index] &= ~0xE0; | |
684 | data->pwm[CONTROL][index] |= (val & 7) << 5; | |
685 | ||
686 | i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), | |
687 | data->pwm[CONTROL][index]); | |
688 | ||
689 | return 0; | |
690 | } | |
691 | ||
692 | static ssize_t set_pwmchan(struct device *dev, struct device_attribute *attr, | |
693 | const char *buf, size_t count) | |
694 | { | |
695 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
696 | struct i2c_client *client = to_i2c_client(dev); | |
697 | struct adt7475_data *data = i2c_get_clientdata(client); | |
698 | int r; | |
699 | long val; | |
700 | ||
701 | if (strict_strtol(buf, 10, &val)) | |
702 | return -EINVAL; | |
703 | ||
704 | mutex_lock(&data->lock); | |
705 | /* Read Modify Write PWM values */ | |
706 | adt7475_read_pwm(client, sattr->index); | |
707 | r = hw_set_pwm(client, sattr->index, data->pwmctl[sattr->index], val); | |
708 | if (r) | |
709 | count = r; | |
710 | mutex_unlock(&data->lock); | |
711 | ||
712 | return count; | |
713 | } | |
714 | ||
715 | static ssize_t set_pwmctrl(struct device *dev, struct device_attribute *attr, | |
716 | const char *buf, size_t count) | |
717 | { | |
718 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
719 | struct i2c_client *client = to_i2c_client(dev); | |
720 | struct adt7475_data *data = i2c_get_clientdata(client); | |
721 | int r; | |
722 | long val; | |
723 | ||
724 | if (strict_strtol(buf, 10, &val)) | |
725 | return -EINVAL; | |
726 | ||
727 | mutex_lock(&data->lock); | |
728 | /* Read Modify Write PWM values */ | |
729 | adt7475_read_pwm(client, sattr->index); | |
730 | r = hw_set_pwm(client, sattr->index, val, data->pwmchan[sattr->index]); | |
731 | if (r) | |
732 | count = r; | |
733 | mutex_unlock(&data->lock); | |
734 | ||
735 | return count; | |
736 | } | |
737 | ||
738 | /* List of frequencies for the PWM */ | |
739 | static const int pwmfreq_table[] = { | |
740 | 11, 14, 22, 29, 35, 44, 58, 88 | |
741 | }; | |
742 | ||
743 | static ssize_t show_pwmfreq(struct device *dev, struct device_attribute *attr, | |
744 | char *buf) | |
745 | { | |
746 | struct adt7475_data *data = adt7475_update_device(dev); | |
747 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
748 | ||
749 | return sprintf(buf, "%d\n", | |
750 | pwmfreq_table[data->range[sattr->index] & 7]); | |
751 | } | |
752 | ||
753 | static ssize_t set_pwmfreq(struct device *dev, struct device_attribute *attr, | |
754 | const char *buf, size_t count) | |
755 | { | |
756 | struct sensor_device_attribute_2 *sattr = to_sensor_dev_attr_2(attr); | |
757 | struct i2c_client *client = to_i2c_client(dev); | |
758 | struct adt7475_data *data = i2c_get_clientdata(client); | |
759 | int out; | |
760 | long val; | |
761 | ||
762 | if (strict_strtol(buf, 10, &val)) | |
763 | return -EINVAL; | |
764 | ||
765 | out = find_nearest(val, pwmfreq_table, ARRAY_SIZE(pwmfreq_table)); | |
766 | ||
767 | mutex_lock(&data->lock); | |
768 | ||
769 | data->range[sattr->index] = | |
770 | adt7475_read(TEMP_TRANGE_REG(sattr->index)); | |
771 | data->range[sattr->index] &= ~7; | |
772 | data->range[sattr->index] |= out; | |
773 | ||
774 | i2c_smbus_write_byte_data(client, TEMP_TRANGE_REG(sattr->index), | |
775 | data->range[sattr->index]); | |
776 | ||
777 | mutex_unlock(&data->lock); | |
778 | return count; | |
779 | } | |
780 | ||
781 | static SENSOR_DEVICE_ATTR_2(in1_input, S_IRUGO, show_voltage, NULL, INPUT, 0); | |
782 | static SENSOR_DEVICE_ATTR_2(in1_max, S_IRUGO | S_IWUSR, show_voltage, | |
783 | set_voltage, MAX, 0); | |
784 | static SENSOR_DEVICE_ATTR_2(in1_min, S_IRUGO | S_IWUSR, show_voltage, | |
785 | set_voltage, MIN, 0); | |
786 | static SENSOR_DEVICE_ATTR_2(in1_alarm, S_IRUGO, show_voltage, NULL, ALARM, 0); | |
787 | static SENSOR_DEVICE_ATTR_2(in2_input, S_IRUGO, show_voltage, NULL, INPUT, 1); | |
788 | static SENSOR_DEVICE_ATTR_2(in2_max, S_IRUGO | S_IWUSR, show_voltage, | |
789 | set_voltage, MAX, 1); | |
790 | static SENSOR_DEVICE_ATTR_2(in2_min, S_IRUGO | S_IWUSR, show_voltage, | |
791 | set_voltage, MIN, 1); | |
792 | static SENSOR_DEVICE_ATTR_2(in2_alarm, S_IRUGO, show_voltage, NULL, ALARM, 1); | |
793 | static SENSOR_DEVICE_ATTR_2(temp1_input, S_IRUGO, show_temp, NULL, INPUT, 0); | |
794 | static SENSOR_DEVICE_ATTR_2(temp1_alarm, S_IRUGO, show_temp, NULL, ALARM, 0); | |
795 | static SENSOR_DEVICE_ATTR_2(temp1_fault, S_IRUGO, show_temp, NULL, FAULT, 0); | |
796 | static SENSOR_DEVICE_ATTR_2(temp1_max, S_IRUGO | S_IWUSR, show_temp, set_temp, | |
797 | MAX, 0); | |
798 | static SENSOR_DEVICE_ATTR_2(temp1_min, S_IRUGO | S_IWUSR, show_temp, set_temp, | |
799 | MIN, 0); | |
800 | static SENSOR_DEVICE_ATTR_2(temp1_offset, S_IRUGO | S_IWUSR, show_temp, | |
801 | set_temp, OFFSET, 0); | |
802 | static SENSOR_DEVICE_ATTR_2(temp1_auto_point1_temp, S_IRUGO | S_IWUSR, | |
803 | show_temp, set_temp, AUTOMIN, 0); | |
804 | static SENSOR_DEVICE_ATTR_2(temp1_auto_point2_temp, S_IRUGO | S_IWUSR, | |
805 | show_point2, set_point2, 0, 0); | |
806 | static SENSOR_DEVICE_ATTR_2(temp1_crit, S_IRUGO | S_IWUSR, show_temp, set_temp, | |
807 | THERM, 0); | |
808 | static SENSOR_DEVICE_ATTR_2(temp1_crit_hyst, S_IRUGO | S_IWUSR, show_temp, | |
809 | set_temp, HYSTERSIS, 0); | |
810 | static SENSOR_DEVICE_ATTR_2(temp2_input, S_IRUGO, show_temp, NULL, INPUT, 1); | |
811 | static SENSOR_DEVICE_ATTR_2(temp2_alarm, S_IRUGO, show_temp, NULL, ALARM, 1); | |
812 | static SENSOR_DEVICE_ATTR_2(temp2_max, S_IRUGO | S_IWUSR, show_temp, set_temp, | |
813 | MAX, 1); | |
814 | static SENSOR_DEVICE_ATTR_2(temp2_min, S_IRUGO | S_IWUSR, show_temp, set_temp, | |
815 | MIN, 1); | |
816 | static SENSOR_DEVICE_ATTR_2(temp2_offset, S_IRUGO | S_IWUSR, show_temp, | |
817 | set_temp, OFFSET, 1); | |
818 | static SENSOR_DEVICE_ATTR_2(temp2_auto_point1_temp, S_IRUGO | S_IWUSR, | |
819 | show_temp, set_temp, AUTOMIN, 1); | |
820 | static SENSOR_DEVICE_ATTR_2(temp2_auto_point2_temp, S_IRUGO | S_IWUSR, | |
821 | show_point2, set_point2, 0, 1); | |
822 | static SENSOR_DEVICE_ATTR_2(temp2_crit, S_IRUGO | S_IWUSR, show_temp, set_temp, | |
823 | THERM, 1); | |
824 | static SENSOR_DEVICE_ATTR_2(temp2_crit_hyst, S_IRUGO | S_IWUSR, show_temp, | |
825 | set_temp, HYSTERSIS, 1); | |
826 | static SENSOR_DEVICE_ATTR_2(temp3_input, S_IRUGO, show_temp, NULL, INPUT, 2); | |
827 | static SENSOR_DEVICE_ATTR_2(temp3_alarm, S_IRUGO, show_temp, NULL, ALARM, 2); | |
828 | static SENSOR_DEVICE_ATTR_2(temp3_fault, S_IRUGO, show_temp, NULL, FAULT, 2); | |
829 | static SENSOR_DEVICE_ATTR_2(temp3_max, S_IRUGO | S_IWUSR, show_temp, set_temp, | |
830 | MAX, 2); | |
831 | static SENSOR_DEVICE_ATTR_2(temp3_min, S_IRUGO | S_IWUSR, show_temp, set_temp, | |
832 | MIN, 2); | |
833 | static SENSOR_DEVICE_ATTR_2(temp3_offset, S_IRUGO | S_IWUSR, show_temp, | |
834 | set_temp, OFFSET, 2); | |
835 | static SENSOR_DEVICE_ATTR_2(temp3_auto_point1_temp, S_IRUGO | S_IWUSR, | |
836 | show_temp, set_temp, AUTOMIN, 2); | |
837 | static SENSOR_DEVICE_ATTR_2(temp3_auto_point2_temp, S_IRUGO | S_IWUSR, | |
838 | show_point2, set_point2, 0, 2); | |
839 | static SENSOR_DEVICE_ATTR_2(temp3_crit, S_IRUGO | S_IWUSR, show_temp, set_temp, | |
840 | THERM, 2); | |
841 | static SENSOR_DEVICE_ATTR_2(temp3_crit_hyst, S_IRUGO | S_IWUSR, show_temp, | |
842 | set_temp, HYSTERSIS, 2); | |
843 | static SENSOR_DEVICE_ATTR_2(fan1_input, S_IRUGO, show_tach, NULL, INPUT, 0); | |
844 | static SENSOR_DEVICE_ATTR_2(fan1_min, S_IRUGO | S_IWUSR, show_tach, set_tach, | |
845 | MIN, 0); | |
846 | static SENSOR_DEVICE_ATTR_2(fan1_alarm, S_IRUGO, show_tach, NULL, ALARM, 0); | |
847 | static SENSOR_DEVICE_ATTR_2(fan2_input, S_IRUGO, show_tach, NULL, INPUT, 1); | |
848 | static SENSOR_DEVICE_ATTR_2(fan2_min, S_IRUGO | S_IWUSR, show_tach, set_tach, | |
849 | MIN, 1); | |
850 | static SENSOR_DEVICE_ATTR_2(fan2_alarm, S_IRUGO, show_tach, NULL, ALARM, 1); | |
851 | static SENSOR_DEVICE_ATTR_2(fan3_input, S_IRUGO, show_tach, NULL, INPUT, 2); | |
852 | static SENSOR_DEVICE_ATTR_2(fan3_min, S_IRUGO | S_IWUSR, show_tach, set_tach, | |
853 | MIN, 2); | |
854 | static SENSOR_DEVICE_ATTR_2(fan3_alarm, S_IRUGO, show_tach, NULL, ALARM, 2); | |
855 | static SENSOR_DEVICE_ATTR_2(fan4_input, S_IRUGO, show_tach, NULL, INPUT, 3); | |
856 | static SENSOR_DEVICE_ATTR_2(fan4_min, S_IRUGO | S_IWUSR, show_tach, set_tach, | |
857 | MIN, 3); | |
858 | static SENSOR_DEVICE_ATTR_2(fan4_alarm, S_IRUGO, show_tach, NULL, ALARM, 3); | |
859 | static SENSOR_DEVICE_ATTR_2(pwm1, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT, | |
860 | 0); | |
861 | static SENSOR_DEVICE_ATTR_2(pwm1_freq, S_IRUGO | S_IWUSR, show_pwmfreq, | |
862 | set_pwmfreq, INPUT, 0); | |
863 | static SENSOR_DEVICE_ATTR_2(pwm1_enable, S_IRUGO | S_IWUSR, show_pwmctrl, | |
864 | set_pwmctrl, INPUT, 0); | |
84d2a314 | 865 | static SENSOR_DEVICE_ATTR_2(pwm1_auto_channels_temp, S_IRUGO | S_IWUSR, |
1c301fc5 JC |
866 | show_pwmchan, set_pwmchan, INPUT, 0); |
867 | static SENSOR_DEVICE_ATTR_2(pwm1_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm, | |
868 | set_pwm, MIN, 0); | |
869 | static SENSOR_DEVICE_ATTR_2(pwm1_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm, | |
870 | set_pwm, MAX, 0); | |
871 | static SENSOR_DEVICE_ATTR_2(pwm2, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT, | |
872 | 1); | |
873 | static SENSOR_DEVICE_ATTR_2(pwm2_freq, S_IRUGO | S_IWUSR, show_pwmfreq, | |
874 | set_pwmfreq, INPUT, 1); | |
875 | static SENSOR_DEVICE_ATTR_2(pwm2_enable, S_IRUGO | S_IWUSR, show_pwmctrl, | |
876 | set_pwmctrl, INPUT, 1); | |
84d2a314 | 877 | static SENSOR_DEVICE_ATTR_2(pwm2_auto_channels_temp, S_IRUGO | S_IWUSR, |
1c301fc5 JC |
878 | show_pwmchan, set_pwmchan, INPUT, 1); |
879 | static SENSOR_DEVICE_ATTR_2(pwm2_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm, | |
880 | set_pwm, MIN, 1); | |
881 | static SENSOR_DEVICE_ATTR_2(pwm2_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm, | |
882 | set_pwm, MAX, 1); | |
883 | static SENSOR_DEVICE_ATTR_2(pwm3, S_IRUGO | S_IWUSR, show_pwm, set_pwm, INPUT, | |
884 | 2); | |
885 | static SENSOR_DEVICE_ATTR_2(pwm3_freq, S_IRUGO | S_IWUSR, show_pwmfreq, | |
886 | set_pwmfreq, INPUT, 2); | |
887 | static SENSOR_DEVICE_ATTR_2(pwm3_enable, S_IRUGO | S_IWUSR, show_pwmctrl, | |
888 | set_pwmctrl, INPUT, 2); | |
84d2a314 | 889 | static SENSOR_DEVICE_ATTR_2(pwm3_auto_channels_temp, S_IRUGO | S_IWUSR, |
1c301fc5 JC |
890 | show_pwmchan, set_pwmchan, INPUT, 2); |
891 | static SENSOR_DEVICE_ATTR_2(pwm3_auto_point1_pwm, S_IRUGO | S_IWUSR, show_pwm, | |
892 | set_pwm, MIN, 2); | |
893 | static SENSOR_DEVICE_ATTR_2(pwm3_auto_point2_pwm, S_IRUGO | S_IWUSR, show_pwm, | |
894 | set_pwm, MAX, 2); | |
895 | ||
896 | static struct attribute *adt7475_attrs[] = { | |
897 | &sensor_dev_attr_in1_input.dev_attr.attr, | |
898 | &sensor_dev_attr_in1_max.dev_attr.attr, | |
899 | &sensor_dev_attr_in1_min.dev_attr.attr, | |
900 | &sensor_dev_attr_in1_alarm.dev_attr.attr, | |
901 | &sensor_dev_attr_in2_input.dev_attr.attr, | |
902 | &sensor_dev_attr_in2_max.dev_attr.attr, | |
903 | &sensor_dev_attr_in2_min.dev_attr.attr, | |
904 | &sensor_dev_attr_in2_alarm.dev_attr.attr, | |
905 | &sensor_dev_attr_temp1_input.dev_attr.attr, | |
906 | &sensor_dev_attr_temp1_alarm.dev_attr.attr, | |
907 | &sensor_dev_attr_temp1_fault.dev_attr.attr, | |
908 | &sensor_dev_attr_temp1_max.dev_attr.attr, | |
909 | &sensor_dev_attr_temp1_min.dev_attr.attr, | |
910 | &sensor_dev_attr_temp1_offset.dev_attr.attr, | |
911 | &sensor_dev_attr_temp1_auto_point1_temp.dev_attr.attr, | |
912 | &sensor_dev_attr_temp1_auto_point2_temp.dev_attr.attr, | |
913 | &sensor_dev_attr_temp1_crit.dev_attr.attr, | |
914 | &sensor_dev_attr_temp1_crit_hyst.dev_attr.attr, | |
915 | &sensor_dev_attr_temp2_input.dev_attr.attr, | |
916 | &sensor_dev_attr_temp2_alarm.dev_attr.attr, | |
917 | &sensor_dev_attr_temp2_max.dev_attr.attr, | |
918 | &sensor_dev_attr_temp2_min.dev_attr.attr, | |
919 | &sensor_dev_attr_temp2_offset.dev_attr.attr, | |
920 | &sensor_dev_attr_temp2_auto_point1_temp.dev_attr.attr, | |
921 | &sensor_dev_attr_temp2_auto_point2_temp.dev_attr.attr, | |
922 | &sensor_dev_attr_temp2_crit.dev_attr.attr, | |
923 | &sensor_dev_attr_temp2_crit_hyst.dev_attr.attr, | |
924 | &sensor_dev_attr_temp3_input.dev_attr.attr, | |
925 | &sensor_dev_attr_temp3_fault.dev_attr.attr, | |
926 | &sensor_dev_attr_temp3_alarm.dev_attr.attr, | |
927 | &sensor_dev_attr_temp3_max.dev_attr.attr, | |
928 | &sensor_dev_attr_temp3_min.dev_attr.attr, | |
929 | &sensor_dev_attr_temp3_offset.dev_attr.attr, | |
930 | &sensor_dev_attr_temp3_auto_point1_temp.dev_attr.attr, | |
931 | &sensor_dev_attr_temp3_auto_point2_temp.dev_attr.attr, | |
932 | &sensor_dev_attr_temp3_crit.dev_attr.attr, | |
933 | &sensor_dev_attr_temp3_crit_hyst.dev_attr.attr, | |
934 | &sensor_dev_attr_fan1_input.dev_attr.attr, | |
935 | &sensor_dev_attr_fan1_min.dev_attr.attr, | |
936 | &sensor_dev_attr_fan1_alarm.dev_attr.attr, | |
937 | &sensor_dev_attr_fan2_input.dev_attr.attr, | |
938 | &sensor_dev_attr_fan2_min.dev_attr.attr, | |
939 | &sensor_dev_attr_fan2_alarm.dev_attr.attr, | |
940 | &sensor_dev_attr_fan3_input.dev_attr.attr, | |
941 | &sensor_dev_attr_fan3_min.dev_attr.attr, | |
942 | &sensor_dev_attr_fan3_alarm.dev_attr.attr, | |
943 | &sensor_dev_attr_fan4_input.dev_attr.attr, | |
944 | &sensor_dev_attr_fan4_min.dev_attr.attr, | |
945 | &sensor_dev_attr_fan4_alarm.dev_attr.attr, | |
946 | &sensor_dev_attr_pwm1.dev_attr.attr, | |
947 | &sensor_dev_attr_pwm1_freq.dev_attr.attr, | |
948 | &sensor_dev_attr_pwm1_enable.dev_attr.attr, | |
84d2a314 | 949 | &sensor_dev_attr_pwm1_auto_channels_temp.dev_attr.attr, |
1c301fc5 JC |
950 | &sensor_dev_attr_pwm1_auto_point1_pwm.dev_attr.attr, |
951 | &sensor_dev_attr_pwm1_auto_point2_pwm.dev_attr.attr, | |
952 | &sensor_dev_attr_pwm2.dev_attr.attr, | |
953 | &sensor_dev_attr_pwm2_freq.dev_attr.attr, | |
954 | &sensor_dev_attr_pwm2_enable.dev_attr.attr, | |
84d2a314 | 955 | &sensor_dev_attr_pwm2_auto_channels_temp.dev_attr.attr, |
1c301fc5 JC |
956 | &sensor_dev_attr_pwm2_auto_point1_pwm.dev_attr.attr, |
957 | &sensor_dev_attr_pwm2_auto_point2_pwm.dev_attr.attr, | |
958 | &sensor_dev_attr_pwm3.dev_attr.attr, | |
959 | &sensor_dev_attr_pwm3_freq.dev_attr.attr, | |
960 | &sensor_dev_attr_pwm3_enable.dev_attr.attr, | |
84d2a314 | 961 | &sensor_dev_attr_pwm3_auto_channels_temp.dev_attr.attr, |
1c301fc5 JC |
962 | &sensor_dev_attr_pwm3_auto_point1_pwm.dev_attr.attr, |
963 | &sensor_dev_attr_pwm3_auto_point2_pwm.dev_attr.attr, | |
964 | NULL, | |
965 | }; | |
966 | ||
967 | struct attribute_group adt7475_attr_group = { .attrs = adt7475_attrs }; | |
968 | ||
969 | static int adt7475_detect(struct i2c_client *client, int kind, | |
970 | struct i2c_board_info *info) | |
971 | { | |
972 | struct i2c_adapter *adapter = client->adapter; | |
973 | ||
974 | if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_BYTE_DATA)) | |
975 | return -ENODEV; | |
976 | ||
977 | if (kind <= 0) { | |
978 | if (adt7475_read(REG_VENDID) != 0x41 || | |
979 | adt7475_read(REG_DEVID) != 0x75) { | |
980 | dev_err(&adapter->dev, | |
981 | "Couldn't detect a adt7475 part at 0x%02x\n", | |
982 | (unsigned int)client->addr); | |
983 | return -ENODEV; | |
984 | } | |
985 | } | |
986 | ||
987 | strlcpy(info->type, adt7475_id[0].name, I2C_NAME_SIZE); | |
988 | ||
989 | return 0; | |
990 | } | |
991 | ||
992 | static int adt7475_probe(struct i2c_client *client, | |
993 | const struct i2c_device_id *id) | |
994 | { | |
995 | struct adt7475_data *data; | |
996 | int i, ret = 0; | |
997 | ||
998 | data = kzalloc(sizeof(*data), GFP_KERNEL); | |
999 | if (data == NULL) | |
1000 | return -ENOMEM; | |
1001 | ||
1002 | mutex_init(&data->lock); | |
1003 | i2c_set_clientdata(client, data); | |
1004 | ||
1005 | /* Call adt7475_read_pwm for all pwm's as this will reprogram any | |
1006 | pwm's which are disabled to manual mode with 0% duty cycle */ | |
1007 | for (i = 0; i < ADT7475_PWM_COUNT; i++) | |
1008 | adt7475_read_pwm(client, i); | |
1009 | ||
1010 | ret = sysfs_create_group(&client->dev.kobj, &adt7475_attr_group); | |
1011 | if (ret) | |
1012 | goto efree; | |
1013 | ||
1014 | data->hwmon_dev = hwmon_device_register(&client->dev); | |
1015 | if (IS_ERR(data->hwmon_dev)) { | |
1016 | ret = PTR_ERR(data->hwmon_dev); | |
1017 | goto eremove; | |
1018 | } | |
1019 | ||
1020 | return 0; | |
1021 | ||
1022 | eremove: | |
1023 | sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group); | |
1024 | efree: | |
1025 | kfree(data); | |
1026 | return ret; | |
1027 | } | |
1028 | ||
1029 | static int adt7475_remove(struct i2c_client *client) | |
1030 | { | |
1031 | struct adt7475_data *data = i2c_get_clientdata(client); | |
1032 | ||
1033 | hwmon_device_unregister(data->hwmon_dev); | |
1034 | sysfs_remove_group(&client->dev.kobj, &adt7475_attr_group); | |
1035 | kfree(data); | |
1036 | ||
1037 | return 0; | |
1038 | } | |
1039 | ||
1040 | static struct i2c_driver adt7475_driver = { | |
1041 | .class = I2C_CLASS_HWMON, | |
1042 | .driver = { | |
1043 | .name = "adt7475", | |
1044 | }, | |
1045 | .probe = adt7475_probe, | |
1046 | .remove = adt7475_remove, | |
1047 | .id_table = adt7475_id, | |
1048 | .detect = adt7475_detect, | |
1049 | .address_data = &addr_data, | |
1050 | }; | |
1051 | ||
1052 | static void adt7475_read_hystersis(struct i2c_client *client) | |
1053 | { | |
1054 | struct adt7475_data *data = i2c_get_clientdata(client); | |
1055 | ||
1056 | data->temp[HYSTERSIS][0] = (u16) adt7475_read(REG_REMOTE1_HYSTERSIS); | |
1057 | data->temp[HYSTERSIS][1] = data->temp[HYSTERSIS][0]; | |
1058 | data->temp[HYSTERSIS][2] = (u16) adt7475_read(REG_REMOTE2_HYSTERSIS); | |
1059 | } | |
1060 | ||
1061 | static void adt7475_read_pwm(struct i2c_client *client, int index) | |
1062 | { | |
1063 | struct adt7475_data *data = i2c_get_clientdata(client); | |
1064 | unsigned int v; | |
1065 | ||
1066 | data->pwm[CONTROL][index] = adt7475_read(PWM_CONFIG_REG(index)); | |
1067 | ||
1068 | /* Figure out the internal value for pwmctrl and pwmchan | |
1069 | based on the current settings */ | |
1070 | v = (data->pwm[CONTROL][index] >> 5) & 7; | |
1071 | ||
1072 | if (v == 3) | |
1073 | data->pwmctl[index] = 0; | |
1074 | else if (v == 7) | |
1075 | data->pwmctl[index] = 1; | |
1076 | else if (v == 4) { | |
1077 | /* The fan is disabled - we don't want to | |
1078 | support that, so change to manual mode and | |
1079 | set the duty cycle to 0 instead | |
1080 | */ | |
1081 | data->pwm[INPUT][index] = 0; | |
1082 | data->pwm[CONTROL][index] &= ~0xE0; | |
1083 | data->pwm[CONTROL][index] |= (7 << 5); | |
1084 | ||
1085 | i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), | |
1086 | data->pwm[INPUT][index]); | |
1087 | ||
1088 | i2c_smbus_write_byte_data(client, PWM_CONFIG_REG(index), | |
1089 | data->pwm[CONTROL][index]); | |
1090 | ||
1091 | data->pwmctl[index] = 1; | |
1092 | } else { | |
1093 | data->pwmctl[index] = 2; | |
1094 | ||
1095 | switch (v) { | |
1096 | case 0: | |
1097 | data->pwmchan[index] = 1; | |
1098 | break; | |
1099 | case 1: | |
1100 | data->pwmchan[index] = 2; | |
1101 | break; | |
1102 | case 2: | |
1103 | data->pwmchan[index] = 4; | |
1104 | break; | |
1105 | case 5: | |
1106 | data->pwmchan[index] = 6; | |
1107 | break; | |
1108 | case 6: | |
1109 | data->pwmchan[index] = 7; | |
1110 | break; | |
1111 | } | |
1112 | } | |
1113 | } | |
1114 | ||
1115 | static struct adt7475_data *adt7475_update_device(struct device *dev) | |
1116 | { | |
1117 | struct i2c_client *client = to_i2c_client(dev); | |
1118 | struct adt7475_data *data = i2c_get_clientdata(client); | |
1119 | u8 ext; | |
1120 | int i; | |
1121 | ||
1122 | mutex_lock(&data->lock); | |
1123 | ||
1124 | /* Measurement values update every 2 seconds */ | |
1125 | if (time_after(jiffies, data->measure_updated + HZ * 2) || | |
1126 | !data->valid) { | |
1127 | data->alarms = adt7475_read(REG_STATUS2) << 8; | |
1128 | data->alarms |= adt7475_read(REG_STATUS1); | |
1129 | ||
1130 | ext = adt7475_read(REG_EXTEND1); | |
1131 | for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) | |
1132 | data->voltage[INPUT][i] = | |
1133 | (adt7475_read(VOLTAGE_REG(i)) << 2) | | |
1134 | ((ext >> ((i + 1) * 2)) & 3); | |
1135 | ||
1136 | ext = adt7475_read(REG_EXTEND2); | |
1137 | for (i = 0; i < ADT7475_TEMP_COUNT; i++) | |
1138 | data->temp[INPUT][i] = | |
1139 | (adt7475_read(TEMP_REG(i)) << 2) | | |
1140 | ((ext >> ((i + 1) * 2)) & 3); | |
1141 | ||
1142 | for (i = 0; i < ADT7475_TACH_COUNT; i++) | |
1143 | data->tach[INPUT][i] = | |
1144 | adt7475_read_word(client, TACH_REG(i)); | |
1145 | ||
1146 | /* Updated by hw when in auto mode */ | |
1147 | for (i = 0; i < ADT7475_PWM_COUNT; i++) | |
1148 | data->pwm[INPUT][i] = adt7475_read(PWM_REG(i)); | |
1149 | ||
1150 | data->measure_updated = jiffies; | |
1151 | } | |
1152 | ||
1153 | /* Limits and settings, should never change update every 60 seconds */ | |
56e35eee | 1154 | if (time_after(jiffies, data->limits_updated + HZ * 60) || |
1c301fc5 JC |
1155 | !data->valid) { |
1156 | data->config5 = adt7475_read(REG_CONFIG5); | |
1157 | ||
1158 | for (i = 0; i < ADT7475_VOLTAGE_COUNT; i++) { | |
1159 | /* Adjust values so they match the input precision */ | |
1160 | data->voltage[MIN][i] = | |
1161 | adt7475_read(VOLTAGE_MIN_REG(i)) << 2; | |
1162 | data->voltage[MAX][i] = | |
1163 | adt7475_read(VOLTAGE_MAX_REG(i)) << 2; | |
1164 | } | |
1165 | ||
1166 | for (i = 0; i < ADT7475_TEMP_COUNT; i++) { | |
1167 | /* Adjust values so they match the input precision */ | |
1168 | data->temp[MIN][i] = | |
1169 | adt7475_read(TEMP_MIN_REG(i)) << 2; | |
1170 | data->temp[MAX][i] = | |
1171 | adt7475_read(TEMP_MAX_REG(i)) << 2; | |
1172 | data->temp[AUTOMIN][i] = | |
1173 | adt7475_read(TEMP_TMIN_REG(i)) << 2; | |
1174 | data->temp[THERM][i] = | |
1175 | adt7475_read(TEMP_THERM_REG(i)) << 2; | |
1176 | data->temp[OFFSET][i] = | |
1177 | adt7475_read(TEMP_OFFSET_REG(i)); | |
1178 | } | |
1179 | adt7475_read_hystersis(client); | |
1180 | ||
1181 | for (i = 0; i < ADT7475_TACH_COUNT; i++) | |
1182 | data->tach[MIN][i] = | |
1183 | adt7475_read_word(client, TACH_MIN_REG(i)); | |
1184 | ||
1185 | for (i = 0; i < ADT7475_PWM_COUNT; i++) { | |
1186 | data->pwm[MAX][i] = adt7475_read(PWM_MAX_REG(i)); | |
1187 | data->pwm[MIN][i] = adt7475_read(PWM_MIN_REG(i)); | |
1188 | /* Set the channel and control information */ | |
1189 | adt7475_read_pwm(client, i); | |
1190 | } | |
1191 | ||
1192 | data->range[0] = adt7475_read(TEMP_TRANGE_REG(0)); | |
1193 | data->range[1] = adt7475_read(TEMP_TRANGE_REG(1)); | |
1194 | data->range[2] = adt7475_read(TEMP_TRANGE_REG(2)); | |
1195 | ||
1196 | data->limits_updated = jiffies; | |
1197 | data->valid = 1; | |
1198 | } | |
1199 | ||
1200 | mutex_unlock(&data->lock); | |
1201 | ||
1202 | return data; | |
1203 | } | |
1204 | ||
1205 | static int __init sensors_adt7475_init(void) | |
1206 | { | |
1207 | return i2c_add_driver(&adt7475_driver); | |
1208 | } | |
1209 | ||
1210 | static void __exit sensors_adt7475_exit(void) | |
1211 | { | |
1212 | i2c_del_driver(&adt7475_driver); | |
1213 | } | |
1214 | ||
1215 | MODULE_AUTHOR("Advanced Micro Devices, Inc"); | |
1216 | MODULE_DESCRIPTION("adt7475 driver"); | |
1217 | MODULE_LICENSE("GPL"); | |
1218 | ||
1219 | module_init(sensors_adt7475_init); | |
1220 | module_exit(sensors_adt7475_exit); |